Rh2(OAc)4-AgOTf Cooperative Catalysis in Cyclization/Three-Component Reactions for Concise Synthesis of 1,2-Dihydroisoquinolines

Dirhodium acetate and silver triflate cooperatively catalyzed tandem cyclization/three-component reactions of 2-alkynylarylaldimines with diazo compounds and water or alcohols are reported to afford 1,2-dihydroisoquinolines bearing α-hydroxyl-β-amino carboxylate skeleton in high yield.